Baicheng is located in the ecologically fragile area in the west of Jilin Province, where there is a serious shortage of water resources. Groundwater is the main source of water supply, and crop cultivation consumes a lot of water. Based on data provided by CLIMWAT 2.0 and China Meteorological Data Network, CROPWAT 8.0 was used to calculate the crop water footprint and its efficiency in Baicheng from 2005 to 2016, and the following conclusions were drawn.（1） The water footprint of crops in Baicheng as a whole shows a trend of slow fluctuation, and the main influencing factors are precipitation and single crop yield.（2） In the composition of crop water footprint, the footprint of green water, blue water and gray water accounted for 36.08%, 33.13% and 30.79% respectively.（3） The difference of water footprint of crops is obvious. Rice is the most blue water consumption. In different hydrological years,crop water footprint generally increases in dry years. The water footprint of mung beans and sunflower seeds was higher, which was mainly affected by the yield per unit area. Beets, vegetables and fruits have lower water footprints.（4） The efficiency of crop water footprint shows a downward trend, and the efficiency of water resource utilization keeps increasing, but the value is still large, so it is urgent to solve the bottleneck of water shortage. As a result, the crop planting in Baicheng should attach great importance to the rational development and utilization of water and soil resources, and adjust the planting structure appropriately according to local conditions. Support by science and technology to improve crop yield per unit area. And it should strengthen water-saving irrigation and promote the virtuous cycle of water ecology.